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CVE-2026-44318

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's BSF PUT /nbsf-management/v1/subscriptions/{subId} handler has an unsynchronized write on the global Subscriptions map. The handler first reads the map under RLock() via BSFContext.GetSubscription(subId), but if the subscription does not exist, ReplaceIndividualSubcription() writes back to the same map directly without taking the mutex (bsfContext.BsfSelf.Subscriptions[subId] = subscription). Under concurre
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:035f1be3a81716048d43eb2b22d6a1384d41e9b7eb5e4857303f661280fe043e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-820","description":"CWE-820: Missing Synchronization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"free5gc","vendor":"free5gc","versions":[{"status":"affected","version":"< 4.2.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-820","description":"CWE-820: Missing Synchronization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/free5gc/bsf/commit/277908565fd628d974a13ef562b81a8b7b519ffa","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/bsf/commit/277908565fd628d974a13ef562b81a8b7b519ffa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/references/3
{"name":"https://github.com/free5gc/bsf/pull/7","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/bsf/pull/7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/references/2
{"name":"https://github.com/free5gc/free5gc/issues/926","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/free5gc/issues/926"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/issues/926"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/adp/0/references/1
{"name":"https://github.com/free5gc/free5gc/security/advisories/GHSA-27ph-8q4f-h7m7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-27ph-8q4f-h7m7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-27ph-8q4f-h7m7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1879ab765a2dc8b3738603cdd12c52e8822b611cf97d55a7126f38330274d386 · sha256:bbcef563ad08744a… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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